Qualitative Analysis - Result Question 65

####68. In the following reaction, identify the compounds/reaction conditions represented by the alphabets $A$ and $B$.

$$ PbS \xrightarrow[\text { air }]{\text { Heat in }} A+PbS \xrightarrow{B} Pb+SO _2 $$

(1991, 1M)

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Solution:

  1. $PbS \xrightarrow[\text { air }]{\text { Heat in }} PbO+PbS \underset{\text { absence of air }}{\text { Heat in }} Pb+SO _2$


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